Ordered 10 boards from JLCPCM - 2 ounce copper - 2u gold ENIM finish - 2 mm thickness. I will not need all of them.
If someone wants them at my cost let me know - $12.58 each plus postage. I figure shipping within USA only.
Hope this is OK, Tombo - just trying to make it easier for others to give this a try.
Will convert my amps to B+ to use this improved R21.
Thanks,
If someone wants them at my cost let me know - $12.58 each plus postage. I figure shipping within USA only.
Hope this is OK, Tombo - just trying to make it easier for others to give this a try.
Will convert my amps to B+ to use this improved R21.
Thanks,
More than OK. I welcome any way that provides members with easier access to PCBs.
Though, I won’t sleep sound till first build confirms that there are no mistakes in PCB design changes made after my verification builds. 🙂
Gerbers are uploaded and ready to go at JLCPCB.
Tombo, I'm not seeing the better price for 2oz and ENIG finish that you mentioned?
Each option adds approx. $16.50 to the fab price, this is the same as always.
Maybe as the designer you get a break! 🤣
Thanks for creating and sharing this revised all-in-one psu!
Next amp up I'll use a pair in series, as Gary will, for a bipolar supply.
Rounded corners rule!
Tombo, I'm not seeing the better price for 2oz and ENIG finish that you mentioned?
Each option adds approx. $16.50 to the fab price, this is the same as always.
Maybe as the designer you get a break! 🤣
Thanks for creating and sharing this revised all-in-one psu!
Next amp up I'll use a pair in series, as Gary will, for a bipolar supply.
Rounded corners rule!
I did not see those prices either at JLC, so ordered normal finish.
Yes, vunce will be using for dual supply.
Tombo - any hints for adjusting the trimpot, thanks.
Yes, vunce will be using for dual supply.
Tombo - any hints for adjusting the trimpot, thanks.
Hmm. I remember that I had to click back and forth on different options and price went down to 2 oz, 1.6 mm thick being cheaper with ENIG than with standard finish.
5 PCBs were 40.6 $ without any taxes and postal cost.
EDIT: PCB color can affect price considerably. Check for green first.
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Nothing to worry. You simply plug supply and if red LED is flashing, that means output voltage is set higher than available at input. So, you just turn trimpot counter clockwise till flashing stops.
If green LED is on and red isn’t flashing, simply measure and adjust output voltage to the required level.
OK, thanks again Tombo.
Yes that price now shows for green finish, then the price skyrockets for other colors and the delivery time is also increased.
Yes that price now shows for green finish, then the price skyrockets for other colors and the delivery time is also increased.
When I was ordering, price was the same for green and black. I think they change pricing daily, based on number of existing orders of the same color.
One thing definitely catches the eye and that is that many if not most parts have become more expensive.
BTW why are there 2 x 1800 µf in the BOM? The PSU has only 1.
BTW why are there 2 x 1800 µf in the BOM? The PSU has only 1.
My wallet noticed that. There will be somewhat less DIY in the future
I have an unfortunate habit to pick components by performance, whatever the price.
Thank’s for catching that.
It can be used for C3 as well, but C3 at 470 uF is enough. I’ll correct BOM.
Based upon what Vunce wrote - can this board be used in a negative supply? Just reverse the leads?
So one just reverses the connection? Sorry to be a dunce but then ... I am a dunce.
Thanks, Tombo
Thanks, Tombo
At the risk of belaboring the output capacitor question - (who better than I to belabor things?) - if one can use any value they want - for a device needing 40 volts @ 3 amps - what is a good value to use?
Sorry,
Sorry,